なぜ民主国家は海沿いに集中しているのか？

『あの国の思惑を見抜く 地政学』詳細はこちらから：https://amzn.to/4h6dlSH 参考文献 Gerring, J. (2022). The Deep Roots of Modern Democracy: Geography and the Diffusion of Political Institutions (1st ed.). Cambridge University Press. https://doi.org/10.1017/9781009115223 Rasler, K. A., & Thompson, W. R. (2005). Puzzles of the democratic peace : theory, geopolitics, and the transformation of world politics (1st ed. 2005.). Palgrave Macmillan. https://doi.org/10.1057/9781403982308 Roy, E., Stephen, H., & Jordan, H. (2023). Transport Corridors. Long-Run Prosperity Working Paper Series Hoover Institution, 23002, 1–37. https://www.hoover.org/sites/default/files/2023-05/LRP%20WP%2023002.pdf Thompson, W. R. (1992). Dehio, Long Cycles, and the Geohistorical Context of Structural Transition. World Politics, 45(1), 127–152. https://doi.org/10.2307/2010521